The Rock Island Armory STK150 is a lightweight 9mm semi-automatic pistol designed for personal defense, range use, and everyday handling. Its 4-inch barrel supports a practical balance of shootability and maneuverability, while the aluminum frame grip helps keep the unloaded weight at 1.80 pounds. The pistol features a black anodized frame with a black PECVD-coated slide and barrel, fixed white-dot sights, and an optic-ready rear sight configuration that supports co-witnessing with a compatible red dot. Its 17-round magazine provides substantial on-board capacity in a compact, ergonomic design.

Key features

• 9mm semi-automatic action for reliable defensive and recreational use
• 4-inch barrel provides a practical balance of control and maneuverability
• 17+1 capacity supports extended shooting between reloads
• Lightweight aluminum frame and integrated aluminum grip weigh 1.80 pounds unloaded
• Fixed white-dot sights provide a clear conventional aiming reference
• Optic-ready rear sight configuration supports co-witnessing with a compatible red dot sight

The STK150 combines lightweight handling, useful capacity, and optic-ready sighting in a practical 9mm pistol.